If the system has been modified to operate as a top feed drip that causes the drain pump to operate many
more times than it was designed for, this will reduce the life of the electrical components. Also, if the drain
pump has been changed to a larger pump that requires more current, this will also reduce the life of the
electrical components. Modifications of this type would void the warranty.
The barriers in the bottom of the Controller keep the Drain Pump
away from the Water Level Switches. The Drain Pump creates a
magnetic field when running that can cause the Water Level Switches to
activate. Continued use with the Drain Pump too close to the Water
Level Switches can damage the Controller. Removal of the barriers
voids the warranty.
Frequently asked questions
Q: How often should I water the plants?
A: The number of fill cycles depends on the growth rate of your plants and the evaporation rate. Fast growing
adult plants may need anywhere from three to six fill cycles per day. New cuttings may only need one fill per
day. Just like soil gardening, if you can stick your whole finger into the soil (or rock in this case) and it’s dry,
it’s time to water.
Q: How long should the system stay filled?
A: Just long enough to fill the pots. Usually 15 minutes.
Q: When should I fill the reservoir?
A: The reservoir should be topped off as often as possible. If the water level gets below 2/3 full the nutrient may
become too concentrated. Only fill the reservoir after the system has had at least 30 minutes to drain. If you add
water to the reservoir when it’s filling the pots, it may overflow when the water drains back.
Q: Should I drain the system and flush it out once in a while?
A: Yes, it’s a good idea to drain the system and replace the nutrient solution every 2 weeks. Fill the reservoir
about half full with water and let it fill the pots. Let the system drain back out and discard the water in the
reservoir. Scrubbing the reservoir and pots is usually not needed.
Q: When should I add nutrient?
A: You should add nutrient every time you fill the reservoir. If you’re topping off the reservoir between regular
nutrient changes, use half strength nutrient. When the water evaporates it leaves the nutrient behind, increasing
the concentration.
Q: When should I check and adjust the pH?
A: The pH should stay close to 6.3. A system that uses a lot of water will probably need to be checked every
day. For low water usage plants like orchids, once a week should be fine.
Q: Do I need to replace the Hydroton?
A: No, Hydroton can be reused many times. We do recommend cleaning it between crops. Remove the large
root material and let it soak in a 0.5% hydrogen peroxide solution overnight. Rinse it well and reuse.
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